| 摘要 |
<p>PURPOSE:To prevent the adverse influence on living of plants, microorganisms, small animals, etc., by sticking paste formed by mixing a specific admixture material, water, cement and chemical admixture to aggregate, then molding the paste so as to have ruggedness. CONSTITUTION:The paste 4 hating 20 to 150 poise apparent viscosity is obtd. by adjusting the paste to 0.20 to 0.45:1 water:cement, 0.10 to 0.40:1 at least one kind of the admixture materials selected from pozzolan type admixtures, such as active silica, active alumina and fine powder of slag and org. admixture materials, such as high-polymer emulsion, cellulosic and acrylic systems:cement and 0.05 to 0.03:1 water-reducing agent, such as high-performance water-reducing agent and AE water-reducing agent: cement. This paste 4 is stuck to the aggregate 2 to fill 20 to 70% of the void volume of the aggregate 2; thereafter, the aggregate is molded to have the ruggedness, by which the cured cement body 1 having continuous open gaps 3 is obtd.</p> |
